0 When birds such as doves and pigeons coo, they make a low soft sound. -- （鴿子等）咕咕地叫
1 abbreviation for chief operating officer : the manager in an organization who is responsible for how the whole organization is run -- 營運長，首席運營官（chief operating office 的縮寫）
Most recently, he was COO of IFS Engineering. 就在不久前��他還是IFS 工程公司的營運長。
She received an e-mail from Mary Wittenberg, COO of the New York Road Runners Club.
He is extremely well liked inside the company and out, and has been a great COO.
In May, President John McHale Jr. resigned his post with the Tigers to become COO of the Tampa Bay Devil Rays.
At 24 years of age, he joined the industry, and rose to COO.
Between 2 and 3 months, fussing and cooing became a new vocalization, "interrupted fussing," characterized by alternations between the two kinds of vocalizations.
It is dark outside and the turtledoves are cooing.
The relation between index-finger extension and the acoustic quality of cooing in three-month-old infants.
A man in an apron dandles a naked baby in front of him, smiling and cooing.
